package com.dhecp.project.common.controller;

import java.io.File;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import com.dhecp.common.config.Global;
import com.dhecp.common.config.ServerConfig;
import com.dhecp.common.constant.Constants;
import com.dhecp.common.core.domain.AjaxResult;
import com.dhecp.common.utils.StringUtils;
import com.dhecp.common.utils.file.FileUploadUtils;
import com.dhecp.common.utils.file.FileUtils;

/**
 * 通用请求处理
 * 
 * @author ruoyi
 */
@Controller
public class CommonController
{
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;

    /**
     * 通用下载请求
     * 
     * @param fileName 文件名称
     * @param delete 是否删除
     */
    @GetMapping("common/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request)
    {
        try
        {
            // if (!FileUtils.isValidFilename(fileName))
            // {
            //     throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            // }
            // //2020-11-18加上这句判断允许的扩展名才能下载
            // if (!FileUtils.checkAllowDownload(fileName))
            // {
            //     throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            // }
            //String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String realFileName = fileName.substring(fileName.indexOf("_") + 1);
            String filePath = Global.getDownloadPath() + fileName;
            long fileLength = new File(filePath).length();
            response.setCharacterEncoding("utf-8");
            response.setContentType("multipart/form-data");
            response.setHeader("Content-Disposition",
                    "attachment;fileName=" + FileUtils.setFileDownloadHeader(request, realFileName));
			response.setHeader("Content-Length", String.valueOf(fileLength));
            FileUtils.writeBytes(filePath, response.getOutputStream());
//            if (delete)
//            {
//                FileUtils.deleteFile(filePath);
//            }
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }

    /**
     * 通用上传请求
     */
    @PostMapping("/common/upload")
    @ResponseBody
    public AjaxResult uploadFile(MultipartFile uploadfile, String module) throws Exception
    {
        try
        {
            // 上传文件路径
            String fileDirPath = Global.getUploadPath();
            if (!StringUtils.isEmpty(module)){
                fileDirPath = Global.getProfile() + "/" + module;
            }

            // 上传并返回新文件名称
            String filePath = FileUploadUtils.upload(fileDirPath, uploadfile);
            String fileName = uploadfile.getOriginalFilename();
            String fileExt = FileUploadUtils.getExtension(uploadfile);
            long fileSize = uploadfile.getSize();
            String fileUrl = serverConfig.getUrl() + filePath;
            AjaxResult ajax = AjaxResult.success();
            ajax.put("fileName", fileName);
            ajax.put("filePath", filePath);
            ajax.put("fileExt", fileExt);
            ajax.put("fileSize", fileSize);
            ajax.put("fileUrl", fileUrl);
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/common/download/resource")
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
            throws Exception
    {
        // 本地资源路径
        String localPath = Global.getProfile();
        // 数据库资源地址
        String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
        // 下载名称
        String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
        response.setCharacterEncoding("utf-8");
        response.setContentType("multipart/form-data");
        response.setHeader("Content-Disposition",
                "attachment;fileName=" + FileUtils.setFileDownloadHeader(request, downloadName));
        FileUtils.writeBytes(downloadPath, response.getOutputStream());
    }
}
